. An Asahi Electric Phone: 13868434706 Company Website: www.xuandq.com.QQ 2449182578 Main: Transformer; isolation switch; insulator; through walls casing; arrester high voltage electrical. (1) high strength and light weight. Composite insulators strength to weight, namely a high ratio of high specific strength. Its high mechanical strength from the FRP ROD excellent mechanical properties, glass and steel rods crosswise tensile strength up to now been widely adopted over 1000MPa, and the mandrel density of only about 2g / cm3, and therefore its high specific strength, about 5 to 10 times the high-quality carbon steel. At the same voltage level, the weight of the porcelain insulator composite insulator is only 1/7 to 1/10. ??? (2) wet flashover flashover voltage is high. Hydrophobic organic composite materials is the main reason for low energy surfaces of composite insulators excellent performance of moisture contamination. In the fog, rain, dew, snow melting, melting ice and other adverse weather conditions, composite insulators separating water droplets formed on the surface rather than a continuous film of water, dirt layer conductance is low, the leakage current is small, less prone to strong The local arcs, it is difficult to further development of local arcs cause the outer insulation flashover. Running for some time, the surface area of ??composite insulators after pollution, dirty water repellent layer can migrate to the surface of a silicon rubber material characteristics unique to contamination in the same degree, the flashover voltage can reach more than double from the same leak insulator. Ordinary Composite Rod Insulator equivalent diameter is much smaller than ordinary suspension porcelain insulators and post insulator, which is the important reason for the excellent stain resistance. Under adverse conditions, the hydrophobic effect may be due to electrical and environmental stress is decreased or lost, but its equivalent diameter will not thicken, so flashover voltage levels will remain high. ??? Convenient (3) Operation and Maintenance. Organic external insulation excellent stain resistance to improve the reliability of power system operation, do not like, like porcelain and glass insulators in polluted areas cleaned regularly, there was no common Suspension Insulators zero value detecting problems and greatly reduce the contamination area Insulators operation and maintenance costs. ??? (4) is broken, to prevent accidents. Composite insulators impact resistance capability, greatly reducing installation, accident damage caused during transportation, and can effectively prevent the destruction of shootings and other human factors. ??? Technical standards: ??? GB / T "nominal voltage above 1000V ac overhead lines with composite insulators - Definitions, test methods and acceptance criteria" JB / T "high voltage line with organic composite insulator technology"? ?? JB / T 8460-1996 "high-voltage lines with Rod Composite Insulator Dimensions and characteristics" ??? Model Description: ??? FXB-- high voltage lines with Rod Composite insulator; ??? W-- size umbrella (miter not shown); ??? 1,2,3,4-- design number (No. 1 means creepage distance of 20mm / kV, 3,4 means the number creepage distance of 25mm / kV); ??? "-" after the number indicates the rated voltage, kV; ??? "/" after the number indicates the nominal value of mechanical tensile load, kN; ??? last letter indicates the connection structure type (ball connection is not shown)